Effects of leachate on geotechnical characteristics of sandy clay soil

An experiment using the Manalucie variety of tomato was established on a Vega Alta sandy clay soil at Río Piedras, P.R., with various combinations of filter-press cake, and starter solutions such as Folo-food, Growgreen, and 9-10-5, in addition to the regular commonly used fertilizer, 9-10-5. Filter-press cake increased the marketable yield by 6.76 tons. When filter-press cake was not applied the use of starter solutions failed to increase yields. A starter solution made from a 9-10-5 fertilizer was just as effective as the commercial starter solutions. The use of filter-press cake and/or starter solutions is recommended for tomato production in Puerto Rico.

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The Effect of Pori Hole Distance Variation on Infiltration Capacity in Sandy Clay Soil Sample Drainage Channels

Civil Engineering and Architecture ◽

10.13189/cea.2021.090325 ◽

2021 ◽

Vol 9 (3) ◽

pp. 836-841

Author(s):

Fenti Daud Sindagamanik ◽

Sukmasari Antaria ◽

Nenny T Karim ◽

Fauzan Hamdi ◽

Asriany Asrianyc

Keyword(s):

Soil Sample ◽

Clay Soil ◽

Infiltration Capacity ◽

Sandy Clay ◽

Drainage Channels

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A study of the microstructure of a bio-ash stabilized sandy clay soil

World Journal of Advanced Engineering Technology and Sciences ◽

10.30574/wjaets.2021.2.2.0028 ◽

2021 ◽

Vol 2 (2) ◽

pp. 042-051

Author(s):

Apampa O Ahmed ◽

Oseni Kehinde ◽

Popoola Monsuru

Keyword(s):

Ion Exchange ◽

Clay Soil ◽

Lattice Structure ◽

Research Work ◽

Exchange Capacity ◽

Sem Images ◽

Ion Exchange Capacity ◽

Sandy Clay ◽

Small Doses ◽

Stabilized Soil

This research work studies the microstructure of a sandy-clay soil as it is stabilized with corn cob ash (CCA) in dosage rates of 0-3%, in steps of 0.5%, and comparing with OPC-CCA blends (2:1) and OPC alone. The aim being to study the progressive flocculation and agglomeration of the molecules of the soil, upon the addition of varying blends of CCA- OPC in small doses. The samples were taken for microstructural examination using the scanning electron microscope (SEM), and for elemental composition using the Energy Dispersive X-ray Spectroscope (EDS). Corresponding samples of the stabilized soil were subjected to the unconfined compressive strength (UCS) tests. The cat-ion exchange capacity of the soil was also computed. The SEM images indicate that for the CCA stabilized soil, the lattice structure of soil molecules is most clearly defined at 1% CCA content. This is comparable to the cat-ion exchange capacity of the soil (1.17%), and also corresponds to the point of maximum UCS (313.7KN/m2). Significantly, the UCS value returned for CCA stabilized soil was higher than that for OPC alone and for the OPC-CCA blend, within the test range of this study. The paper concludes that a significant level of stabilization could be attained with this soil type, with small doses of CCA, without the need for OPC, whose effect is more pronounced at higher doses and at the pozzolanic phase.

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Evaluation the effect of irrigation water salinity and Fusarium fungi on seven safflower cultivars

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v1i1.4238 ◽

2014 ◽

Vol 1 (1) ◽

pp. 8-16

Author(s):

Behnam Tahmasebpour ◽

Alireza Babazade

Keyword(s):

Sodium Chloride ◽

Clay Soil ◽

Block Design ◽

Resistance Rate ◽

Sandy Clay ◽

Irrigation Water Salinity ◽

Randomized Complete Block Design ◽

Salinity Levels ◽

Soil Clay ◽

Fusarium Fungi

In order to study the effect of Salinity levels of Sodium chloride and Soil type on the characteristics of some grown seeds and the resistance rate of Fusarium fungi (quantitative length evaluation of necrotic part in plants gorget) in biotypes of safflowers, an experiment was factorically conducted by using two salinity levels of sodium chloride (20% and 50% salinitys), seven biotypes of acanaceous and non-acanaceous safflowers (Iraqi 222, IL111, K.H.64.68, and Varamin 295,Local Isfahan , Padideh and 340779), two types of soil (clay sandy-clay), in a three times randomized complete block design. The variance analyzing results showed that between the levels of all factors, there was meaningful difference for 2 studied characteristics. According to the results obtained from the comparison of factors means, genotypes of Iraqi 222, K.H.64.68 and 340779 under the condition of 20% salinity and genotype of Iraqi 222 under the condition of 50% salinity contained the most numbers of grown seeds. On the other hand the most resistance rate against Fusarium mushrooms was related to genotype K.H.64.68 under the condition of clay soil and 20% salinity, genotype IL111 under the condition of clay soil and 50% salinity and local genotype of Isfahan under the condition of sandy-clay soil with 20% salinity, Based on the results obtained from the linear regression and simple correlation coefficient there was positive and meaningful correlation between two evaluated characteristics in the probability level of 1% and the relation between them was estimated as linear and positive one (y=0/545+0/234X), where X refers to the number of grown seeds and y refers to the resistance against Fusarium.

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Studies on compressive strength of sandy clay soil samples with different percentages of lime and nylon fibres

Sustainability Agri Food and Environmental Research ◽

10.7770/safer-v10n1-art2458 ◽

2021 ◽

Vol 10 (1) ◽

Author(s):

T Sini ◽

T Ahira

Keyword(s):

Compressive Strength ◽

Rice Husk Ash ◽

Clay Soil ◽

Ground Improvement ◽

Horizontal Layer ◽

Sandy Clay ◽

Native Soil ◽

The Difference ◽

Nylon Fibre ◽

Properties Of Soil

To develop economically feasible and durable methods of ground improvement are some of the major challenges faced by geotechnical engineers. Many commonly available stabilisers like lime, fly ash, rice husk ash has been used in many studies. These stabilisers are known to improve the compressive strength of soil. But in order to improve the tensile properties of soil and increase the ductility characteristics, fibres can be included along with the commonly used stabilisers. In this paper values of compressive strength of sandy clay soil treated with different concentrations of lime and nylon fibre is studied and compared with the values of untreated native soil. The compressive strength of soil increases with increase in lime content up to 10%. The compressive strength of soil also increases with nylon fibre inclusion up to a concentration of 0.3%. With further increase in nylon fibre content, compressive strength decreases in the studied samples. In the present study the difference in the increase in compressive strength shown by composites with random and horizontal layers of nylon fibres as inclusions appears to be very small. The present study concludes that a combination of lime and nylon fibre can be a better stabilizer for ground improvement. Keywords—unconfined compressive strength, lime, horizontal layer, nylon fibre

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